Archives for March 2009

Striped Iceberg

Admire this beautifully coloured striped iceberg pictures taken taken several hundred miles north of the Antarctic.

 

Not all icebergs are white. Most icebergs appear white as a result of the tiny bubbles trapped within them which reflect light in every direction.

 

Icebergs in the Antarctic area sometimes lined with stripes. The striped iceberg photos below were taken by Norwegian sailor Oyvind Tangen from aboard a research vessel:

striped iceberg

  • around 1,700miles south of Cape Town and
  • 660miles north of the Antarctic.

 

Amazing striped icebergs

 

amazing striped icebergs

 

How do the green, blue, brown colors get into these amazing striped icebergs in Antarctica?

 

  • green stripes are created by the freezing of algae-rich Antarctic sea water. When icebergs falls into the sea, a layer of salty seawater can freeze to the underside of the iceberg. If this sea water is rich in algae, the new frozen layer will form a green stripe.
     
  • icebergs with stripes
    blue layers in icebergs with stripes are formed when iceberg layers melt and refreeze quickly. Blue stripes are often created when a crevice in the ice sheet fills up with meltwater and freezes so quickly that no bubbles form.

     

  • black, brown and yellow are created by sediment collected by the ice when it moves down a hillside towards the sea.

 

mint humbugThe first striped iceberg Oyvind Tangen spotted is about 150ft long and 30ft high and reminded him of a striped candy -a humbug- he bought as a child. Hence the name "humbug iceberg" was born.

Melting of Antarctica will sink Maldives

Now that ocean sea ice around Greenland and Antarctica is melting and oceans simply expand because their temperatures are increasing, some of the Maldives islands could be vanished within 10 years from now.

Over the last 7 years, satellite measurements have shown that the sea level has been rising at 3.3mm (0.13inch) per year.
This is double of what was recorded in the 1900s. The average height of the 1,200 atoll Maldives islands is only about 1.5 meters or 4.8 feet.

Maldives hasn’t much to protect itself from storm surges, nor rising sea levels rise. Repeated storm damage already denudes the Maldives islands, especially when the reefs protecting the atolls die from ocean acidification.

Maldives and the Carbon World Cup

Bird eye's view of the islands of the MaldivesThe Maldives may, or may not, prove to be the winners of the Carbon World-Cup : the race to see which country actually becomes the first to be completely carbon neutral.

The Maldives recently announced aiming to be carbon-neutral within ten years. Other entrants are other popular vacation destinations: New Zealand, Costa Rica, Iceland, Norway and Monaco.

The Maldives have much at stake, in fact their future may very well depend upon every country entering the Carbon World-Cup. The Maldives Islands will be among some of the first and worst affected low-lying islands to suffer ocean inundation as the sea levels rise.

Sea levels rise because carbon gasses shield the earth from cooling down, hence Antarctica will melt faster.